<!--  -->
<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item :to="{ path: '/goods' }">商品列表</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <el-alert
        title="添加商品信息"
        type="info"
        center
        show-icon
        :closable="false"
      >
      </el-alert>

      <el-steps
        :active="activeIndex - '0'"
        align-center
        finish-status="success"
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        :label-position="'top'"
      >
        <el-tabs
          :tab-position="'left'"
          v-model="activeIndex"
          :before-leave="beforeTabsLeave"
          @tab-click="tabClick"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="parentsCateList"
                :props="cascaderProps"
                @change="handleChange"
                clearable
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyParamsList"
              :key="item.attr_id"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="item2"
                  v-for="(item2, index2) in item.attr_vals"
                  :key="index2"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyParamsList"
              :key="item.attr_id"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="item2"
                  v-for="(item2, index2) in item.attr_vals"
                  :key="index2"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              :action="uploadUrl"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headers"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor
              ref="myQuillEditor"
              v-model="addForm.goods_introduce"
            />
            <el-button type="primary" class="addBtn" @click="addGoods">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>

    <el-dialog title="图片预览" :visible.sync="prevDialogVisible" width="50%">
      <img :src="prevUrl" alt="" class="prevImg" />
    </el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
  name: 'Add',
  data () {
    return {
      activeIndex: 0,
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs: []
      },
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ]
      },
      parentsCateList: [],
      cascaderProps: {
        expandTrigger: 'hover',
        value: 'cat_id',
        label: 'cat_name',
        children: 'children'
      },
      manyParamsList: [],
      onlyParamsList: [],
      uploadUrl: 'http://timemeetyou.com:8889/api/private/v1/upload',
      headers: {
        Authorization: window.sessionStorage.getItem('token')
      },
      prevDialogVisible: false,
      prevUrl: ''

    }
  },

  components: {},
  created () {
    this.getCateList()
  },
  computed: {
    cateId () {
      if (this.addForm.goods_cat.length !== 3) {
        return null
      } else {
        return this.addForm.goods_cat[2]
      }
    }
  },

  methods: {
    async getCateList () {
      const { data: res } = await this.$http.get('categories')
      console.log(res)
      if (res.meta.status !== 200) { return this.$message.error('获取列表数据失败！') }

      this.parentsCateList = res.data
    },
    handleChange () {
      console.log(this.addForm.goods_cat)
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
    },
    beforeTabsLeave (activeName, oldActiveName) {
      if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请先选择商品分类！')
        return false
      }
    },
    async tabClick () {
      if (this.activeIndex === '1') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: {
              sel: 'many'
            }
          }
        )
        if (res.meta.status !== 200) { return this.$message.error('获取参数失败！') }
        res.data.forEach(item => {
          if (!item.attr_vals.trim()) {
            item.attr_vals = []
          } else {
            item.attr_vals = item.attr_vals.split(' ')
          }
        })
        this.manyParamsList = res.data
        // this.$message.success('获取成功！')
        console.log(this.manyParamsList)
      } else if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: {
              sel: 'only'
            }
          }
        )
        if (res.meta.status !== 200) { return this.$message.error('获取参数失败！') }
        res.data.forEach(item => {
          if (!item.attr_vals.trim()) {
            item.attr_vals = []
          } else {
            item.attr_vals = item.attr_vals.split(' ')
          }
        })
        this.onlyParamsList = res.data
        console.log(this.onlyParamsList)
      }
    },
    handlePreview () {
      this.prevDialogVisible = true
    },
    handleRemove (file) {
      // console.log(file);
      const removePath = file.response.data.tmp_path
      const index = this.addForm.pics.findIndex(
        item => removePath === item.pic
      )
      this.addForm.pics.splice(index, 1)
      this.$message.success('删除图片成功！')
    },
    handleSuccess (responce) {
      // console.log(responce);
      const picInfo = { pic: responce.data.tmp_path }
      this.addForm.pics.push(picInfo)
      this.prevUrl = responce.data.url
      this.$message.success('图片上传成功!')
    },
    addGoods () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return this.$message.error('请填写完整相关内容')
        this.manyParamsList.forEach(item => {
          const obj = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' ')
          }
          this.addForm.attrs.push(obj)
        })

        this.onlyParamsList.forEach(item => {
          const obj = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' ')
          }
          this.addForm.attrs.push(obj)
        })
        const form = _.cloneDeep(this.addForm)
        form.goods_cat = form.goods_cat.join(',')
        console.log(form)
        const { data: res } = await this.$http.post('goods', form)
        if (res.meta.status !== 201) return this.$message.error('添加商品失败！')
        this.$message.success('添加商品成功!')
        this.$router.push('/goods')
      })
    }
  }
}
</script>
<style scoped>
.el-tabs {
  margin-top: 15px;
}
.el-cascader {
  width: 300px;
}
.prevImg {
  width: 100%;
}
.addBtn{
  margin-top: 15px;
}
</style>
